Daniel, the Streamlight TLR6 will fit. It will have .4" shorter than the pistol muzzle. Picture : google.com/search?q=streamlight+p938&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi7samG8tTfAhWHm-AKHbAGBYkQ_AUIDygC&biw=1920&bih=938#imgrc=m5NtIUt7uKsEYM: